Spinetail ray (Bathyraja spinicauda) fish species and information / pictures of Spinetail ray - Bathyraja spinicauda

Spinetail ray (Bathyraja spinicauda) fish species information

Scientific Name
Bathyraja spinicauda

Common Name
Spinetail ray

Biology
Disk without spines, except near edge of pectoral fins in males. Ventral mucous pores not blackish. Tail with middorsal row of large spines. Snout pointed (Ref. 7251). Upper surface pale brown or bluish gray without dark markings. Lower surface white with small sooty blotches irregularly distributed around margins of pectorals, pelvic fins white below. Lower surface of tail white but pale brown rearward (Ref. 6902).

Classification

Classified By

Jensen, 1914

Class

Sharks and Rays (Elasmobranchii)

Order

Skates and Rays (Rajiformes)

Family

Skates (Rajidae)

Distribution

Region

Western Atlantic

Distribution

Western Atlantic: Greenland side of Davis Strait and off the east coast of Newfoundland, Canada to off Georges Bank. Eastern Atlantic: Barents Sea, Norway, Iceland-Faroes-Shetland Rise and eastern Greenland (Ref. 3167).

Range

73°N - 40°N

Environment

Climate

Deep-water

Water Temperature From

Unknown °C

Water Temperature To

8 °C

Depth From - meters

140 m

Depth To - meters

1463 m

Zone

bathydemersal

Environment

Marine; bathydemersal; depth range 140 - 1463 m (Ref. 58426), usually 165 - 255 m (Ref. 7251)

Trophic Level

4.03 s.e. 0.63 Based on food items.

Occurs in Marine / Salt water

True

Occurs in Brackish water

False

Occurs in Fresh Water

False

Occurs on Reefs

False

Is kept in Aquariums

False

Physical Size and Genetics

Maximum Length

170 cm

Common Length

Unknown cm

Phylogenetic Diversity Index

PD50 = 0.5000 many relatives (e.g. carps) 0.5 - 2.0 few relatives (e.g. lungfishes)

Human Uses and Population

Human Uses

Fisheries: of no interest

Vulnerability

Very high vulnerability (81 of 100)

Resilience

Low, minimum population doubling time 4.5 - 14 years (Fec assumed to be

Threat To Humans

Harmless

IUCN Red List Status

Near Threatened (NT)